Symbols

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created 6 years ago by Annabelle
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1

A

area

2

a

attenuation

3

ac

attenuation coefficient

4

TA

temporal average

5

TP

temporal peak

6

SP

Spatial Peak

7

SA

Spacial Average

8

DF

Duty factor

9

AR

axial resolution

10

c

propagation speed

11

cos

cosine

12

ct

element propagation speed

13

d

diameter; distance to reflector; distance from transducer

14

DF

duty factor

15

df

focal beam diameter

16

F

f number

17

f

frequency

18

fD

Doppler-shift frequency

19

fl

focal length

20

fo

operating frequency

21

FR

frame rate

22

fR

received (echo) frequency

23

FRm

maximum frame rate

24

fT

transmitted (operating) frequency

25

I

intensity

26

Ii

incident intensity

27

Ir

reflected intensity

28

IRC

intensity reflection coefficient

29

It

transmitted intensity

30

ITC

intensity reflection coefficient

31

L

path length; tube length

32

LPF

lines per frame

33

LR

lateral resolution

34

n

number of cycles per pulse; number of foci;

35

ensemble

length

36

NL

Nyquist limit

37

P

power

38

p

pressure amplitude

39

PD

pulse duration

40

pen

penetration

41

PRF

pulse repetition frequency

42

PRP

pulse repetition period

43

Q

volumetric flow rate

44

R

flow resistance

45

r

radius

46

Re

Reynolds number

47

SPL

spatial pulse length

48

T

period

49

th

element thickness

50

v

flow speed, scatterer speed

51

va

average flow speed

52

vr

receiver speed

53

vs

source speed

54

wb

beam width

55

z

impedance

56

∆P

pressure difference; pressure drop

57

η

viscosity

58

θD

Doppler angle

59

θi

incidence angle

60

θr

reflection angle

61

θt

transmission angle

62

λ

wavelength

63

ρ

density

64

m

mass

65

F

force